todoist_complete_task

WHAT IT DOES

What todoist_complete_task does on Enhanced Todoist MCP Server Extended

AI agents use todoist_complete_task to create or update resources in Enhanced Todoist MCP Server Extended — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Enhanced Todoist MCP Server Extended environment.

THE RISK

Medium Risk

Why todoist_complete_task needs a policy

Completing a task changes its status but is fully reversible; users can uncomplete tasks at any time. This qualifies as a Write operation (modify data reversibly) rather than Destructive. The blast radius is low because the operation does not delete data, cause financial impact, or execute arbitrary code. It is a normal task management workflow action.

From the tool's definition Tool description states 'Mark a task as complete by its ID' - this modifies task state from incomplete to complete, which is a reversible operation (tasks can be marked incomplete again).

Documented attack patterns abuse exactly the kind of access todoist_complete_task gives an agent:

POLICY

How to control todoist_complete_task

PolicyLayer is an MCP gateway — it sits between your AI agents and Enhanced Todoist MCP Server Extended, and nothing reaches the server without passing your rules. This is the rule we recommend for todoist_complete_task:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "todoist_complete_task": {
      "limits": [
        {
          "counter": "todoist_complete_task_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

todoist_complete_task stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Enhanced Todoist MCP Server Extended — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More Enhanced Todoist MCP Server Extended tools

Destructive todoist_delete_comment Delete a comment by its ID Destructive todoist_delete_label Delete a label by its ID. Destructive todoist_delete_project Delete a project by its ID Destructive todoist_delete_section Delete a section by its ID Destructive todoist_delete_task Delete a task by its ID Write todoist_bulk_move_tasks Move multiple tasks (and their respective subtasks, if any; e.g., up to 10-20 parent tasks Write todoist_create_comment Create a new comment on a task or project Write todoist_create_label Create a new label.

All 31 Enhanced Todoist MCP Server Extended tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about todoist_complete_task

What does the todoist_complete_task tool do? +

Mark a task as complete by its ID. It is categorised as a Write tool in the Enhanced Todoist MCP Server Extended MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on todoist_complete_task? +

Register the Enhanced Todoist MCP Server Extended MCP server in PolicyLayer and add a rule for todoist_complete_task: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Enhanced Todoist MCP Server Extended. Nothing to install.

What risk level is todoist_complete_task? +

todoist_complete_task is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit todoist_complete_task? +

Yes. Add a rate_limit block to the todoist_complete_task rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block todoist_complete_task completely? +

Set action: deny in the PolicyLayer policy for todoist_complete_task. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides todoist_complete_task? +

todoist_complete_task is provided by the Enhanced Todoist MCP Server Extended MCP server (vitalio-sh/todoist-mcp-server-ext). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Enhanced Todoist MCP Server Extended tool call.

Start from Enhanced Todoist MCP Server Extended, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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31 Enhanced Todoist MCP Server Extended tools catalogued and risk-classified — across an index of 43,000+ MCP servers.